[Mesa-users] X11 MIT-SHM error on windows xserver using gallium llvmpipe driver

Edson Contreras Cárdenas edrecon at gmail.com
Wed Jul 6 22:29:51 UTC 2016

Hello everyone,

I have the following issue trying to run 'glxgears' command in a windows
X11 applications (xming, mobaxterm, etc) from a remote machine:

Xlib:  extension "MIT-SHM" missing on display MY_DISPLAY_IP:0.0

I already noticed that my configured Makefile has the instruction
-DUSE_XSHM. Can I remove it? llvmpipe needs it? Because I perform the same
operation with "Brian Paul" driver and it runs ok, but I don't have shaders
support. This issue happens with Mesa-11.2.2 and git-main also.

Thanks for your support.

My building script is:



../mesa-11.2.2/configure                                                   \
    --with-llvm-prefix=${BASELIBS_PREFIX}/llvm-3.8            \
    --enable-opengl --disable-gles1 --disable-gles2                \
    --disable-va --disable-gbm --disable-xvmc --disable-vdpau \

--enable-shared-glapi                                                    \

--disable-texture-float                                                    \
    --disable-dri --with-dri-drivers=
    --enable-gallium-llvm --disable-llvm-shared-libs                \
    --with-gallium-drivers=swrast                                         \
    --disable-egl --disable-gbm --with-egl-platforms=              \
    --enable-gallium-osmesa                                               \

[I run following under mobaxterm rsh console]

edsonc at mesa-tests:~> setenv DISPLAY MY_DISPLAY_IP:0.0

edsonc at mesa-tests:~> setenv LD_LIBRARY_PATH

edsonc at mesa-tests:~> glxinfo | grep -i opengl
  OpenGL vendor string: VMware, Inc.
  OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)
  OpenGL version string: 3.0 Mesa 11.2.2 (git-)
  OpenGL shading language version string: 1.30
  OpenGL extensions:

edsonc at mesa-tests:~> glxgears -info
  GL_RENDERER   = Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)
  GL_VERSION    = 3.0 Mesa 11.2.2 (git-)
  GL_VENDOR     = VMware, Inc.
  GL_EXTENSIONS = GL_ARB_multisample ...
  Xlib:  extension "MIT-SHM" missing on display "MY_DISPLAY_IP:0.0"
  Xlib:  extension "MIT-SHM" missing on display "MY_DISPLAY_IP:0.0"
  ... (forever)

And I only have a blank screen.

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